# HTTPDNS Android SDK (SNI Hidden v1.0.0)

## 1. Init

```java
import com.newsdk.sdk.android.httpdns.HttpDns;
import com.newsdk.sdk.android.httpdns.HttpDnsService;
import com.newsdk.sdk.android.httpdns.InitConfig;

String appId = "app1f1ndpo9";

new InitConfig.Builder()
    .setContext(context)
    .setServiceUrl("https://httpdns.example.com:8445")
    .setSecretKey("your-sign-secret") // optional if sign is enabled
    .buildFor(appId);

HttpDnsService httpDnsService = HttpDns.getService(appId);
```

## 2. Resolve

```java
HTTPDNSResult result = httpDnsService.getHttpDnsResultForHostSyncNonBlocking(
    "api.business.com",
    RequestIpType.auto,
    null,
    null
);
```

## 3. Official HTTP Adapter (IP + Empty-SNI + Host)

```java
import com.newsdk.sdk.android.httpdns.network.HttpDnsAdapterOptions;
import com.newsdk.sdk.android.httpdns.network.HttpDnsAdapterRequest;
import com.newsdk.sdk.android.httpdns.network.HttpDnsAdapterResponse;
import com.newsdk.sdk.android.httpdns.network.HttpDnsHttpAdapter;

HttpDnsHttpAdapter adapter = HttpDns.buildHttpClientAdapter(
    httpDnsService,
    new HttpDnsAdapterOptions.Builder()
        .setConnectTimeoutMillis(3000)
        .setReadTimeoutMillis(5000)
        .setRequestIpType(RequestIpType.auto)
        .setAllowInsecureCertificatesForDebugOnly(false)
        .build()
);

HttpDnsAdapterResponse response = adapter.execute(
    new HttpDnsAdapterRequest("GET", "https://api.business.com/v1/ping")
);
```

Behavior is fixed:
- Resolve by `/resolve`.
- Connect to resolved IP over HTTPS.
- Keep `Host` header as business domain.
- No fallback to domain direct request.

## 4. Public Errors

- `NO_IP_AVAILABLE`
- `TLS_EMPTY_SNI_FAILED`
- `HOST_ROUTE_REJECTED`
- `RESOLVE_SIGN_INVALID`

## 5. Removed Public Params

Do not use legacy public parameters:
- `accountId`
- `serviceDomain`
- `endpoint`
- `aesSecretKey`